PDF malware analysis — malicious · 3b15c33b37eff87b

MALICIOUS

PDF

40.3 KB Created: 2020-11-09 06:56:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01

MD5: 3cff95d363f1dfc854335d92aa70c69f SHA-1: c553b49e6a472bf29f6b8fd9d3809ec73743ccb8 SHA-256: 3b15c33b37eff87b0f7fdd5479ec3c3ef664430dfbd7576a5df899fee69d64fc

66 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://trafffi.ru/123?keyword=natural+frequency+of+cantilever+beam PDF link annotation
- https://diveziriluro.weebly.com/uploads/1/3/4/4/134447321/xasokivix-lopotofe-tetag.pdfIn PDF document text
- https://zikenanevo.weebly.com/uploads/1/3/4/5/134589255/b7717bb.pdfIn PDF document text
- https://farenutatovepo.weebly.com/uploads/1/3/4/5/134502273/zemasesisaro_ronikuledo_panufujexab.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375076/normal_5f998d3c1ba36.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383170/normal_5fa07971a68b1.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/xutomoxu/3rd_grade_irregular_plural_nouns_worksheet.pdfIn PDF document text
- https://sizomok.files.wordpress.com/2020/11/14518922443.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8bbe2d13-8c76-4b6c-b7d5-32594706cff0/zimom.pdfIn PDF document text
- https://s3.amazonaws.com/jewizopukuni/jane_hawk_novels_in_order_by_dean_koontz.pdfIn PDF document text
- https://s3.amazonaws.com/jinabom/54101956805.pdfIn PDF document text
- https://kewuguvel.files.wordpress.com/2020/11/tazejikeralozetonutonogup.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005f03.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F03	5248 bytes
SHA-256: `858358f234fa13178122a9edd23cea7e9ed0fa4e49a675e8d7ce077edb3df5f7`
`font_01_sfnt_off000070e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x70E5	10468 bytes
SHA-256: `029e41874b15e5c01828ae54c570e4acd2765ea769dbec416b9594afa62ae8e3`

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